Governor.



J. D. CUMMlNS.

GOVERNOR.

APPLICATION FILED NOV. 20, 1914.

Patented Aug. 10, 1915.

'IIVI/EIVIOH JohnD. Cummms ATTORNEYS JOHN nevrs comm Ins, or mAnsHAL 'ro-wrr, IQWA.

sovnalvorp.

;S pecification of Letters Patent. Patented Aug 10 1915 Application filed meats 20, i914. 5eria 1ITo.f73,156.

To all whom it may concern) I 7 Be 1t known that I, JO N D. G M INs, a

citizen'of the United States, anda resident of Marshalltown, in the countyof Marshall and State of Iowa, have invented a new and Improved Governor, of which the following is a full, clear, and exact description.

The invention relates to shaft governors of the fly wheel type andits object is to provide a new and improved governor which is exceedingly sensitive,to readily respond to comparatively slight variations in the load and without impairing the stability of the governor. V

In order to accomplish the desired result, use is made of a spring-pressed governor lever and a spring-pressed weight slidable on the lever.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification in which the figure is a side elevation of the governor with parts shownin section.

- On the shaft A is secured a rotor B, preferably in the form of a fly wheel, provided on two of its arms with pivots O located near the rim of the rotor, as plainly indicated 1n the drawing. On the pivots C are mounted to swing governor levers D, each connected at its free end by a link E to a o lug F extending from the hub of an eccentric G having its strap G connected in the usual manner wlth the valve or other part to be governed, the eccentric being mounted to rotate loosely on the shaft A. Each of the levers D is pressed in an inward direction by aspring H secured at one end to a yoke I adjustably secured by a set screw I to the corresponding lever D, and the other end of the spring H is attachedto a bolt J held on the rim of the rotor 13. By the arrangement described, the spring H opposes the outward swinging movement of the governor lever D at the time the rotor Bis rotated.

On each governor lever D is mounted to slide a weight K, the outward movement of which is limited by a collar L secured by a set screw L or other fastening means to the outer end of the lever D. A spring N is coiled on each governor lever D and is secured at its outer end to a bracket 0 attached to the corresponding weight K, and the inner end of each spring N is attached to a collar P slidable on the governor lever D and engaged by adjusting bolts Q, held on a collar R secured by a set screw R or other fastening device tothe corresponding lever D. The spring N opposes the outward sliding movement of the corresponding weight K on thegovernor lever D. The spring N of each governor lever is somewhat lighter than the spring I-I opposing the outward movement of the governor lever D, but the tension of the spring N can beregulated by the bolts Q and the tension of the springH can be regulated by the bolt J and by adjusting the yoke I on the governor lever D more or less leverage can be given to the action .of the spring H on the governor lever D.

When the shaft A is rotating the weights K of the levers D tend to swing the said levers in an outward direction with a view to cause the links'E to shift the eccentric G to govern the object to be governed according to the speed at which the rotor B is rotated at the time. It will be noticed that the weights IC tend to slide outward on the governor levers D but are opposed by the light springs N so that when the speed increases or decreases according to slight variations in the load then the weights K are correspondingly shifted on the governor levers D, that is, the weights are moved nearer to or farther from the pivots O of the governor levers thus changing the strain of the levers on the springs H and consequently causing a variation in the shifting of the eccentric G.

From the foregoing it will be seen that a very sensitive governor is provided owing to the'spring-pressed weights slidably mounted on the governor arms D.

It will also be noticed that the several parts can be readily adjusted to provide the desired stability of the governor which is not affected by the slidable spring weights which latter control the part to be governed by slight variations in the load.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A governor, comprising a rotor, governor levers fulcrumed on the said rotor adjacent the rim, means connecting the governor levers with the part to be governed,

springs connecting the governor levers with I and the other end to the slidable Weights to oppose the outward sliding movement of the Weights on the governor levers, said springs being lighter than the first-named springs.

V 2. A governor, comprising a rotor, governor levers fulcrumed on the said rotor adjacent the rim, means eonnecting the said governor levers with the part to be governed, springs connecting the governor levers with the rotor to oppose the outward swinging motion of the governor levers, Weights slidable on the said governor levers, springs coiled on the said governor levers and secured at one end to the said Weights, and tension adjusting device s secured to the said governor levers and to which the other ends of the said springs are attached.

' 8. In a governor, a rotor, an eccentric, a

spring pressed lever having its outer end pivoted tothe rotor, and its inner end pivotally connected with the eccentric, a Weight slidable on the lever, a spring coiled on the lever and having one end secured to the Weight, a'member slidable on. the lever and .to which the other end of the spring is se- JOHN DAVIS oUMMINs.

Witnesses;

i G. H. CHILDS, B. A. Benson.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' 7 Washington, D. C. 

